Li-Lo heading to jail and her secret message for the judge

So Lindsay Ho-han is heading to the slammer for 90 days-and she deserves it for being such an irresponsible mess!

Anyway check out this picture and see what she was scribbling away while being sentenced:



Wow, no-1 will regret the judge's decision now, let's just hope the judge can't see the fine print.

Close-up photos reveal that the probation-violating starlet had written "F--k U" on her middle fingernail, not the kind of message she'd want to send to the person about to hand her 90 days in jail for failing to attend alcohol-education classes stipulated in her 2007 DUI case.

Throughout yesterday's proceedings, Lohan frequently had her hands curled underneath her chin, her middle finger aimed in the direction of the witness stand and Judge Marsha Revel, whose sentence would later prompt a teary LiLo to burst into hysterics.